Force - 10th Physccs

Linear momentum i.e F = ?

• dp/dt

• d(ma)/dp

• mv

• d(ma)/mp

When a force acts on a stationary rigid body which is free to move, the body starts moving in a straight path in the direction of applied force. This is called?

• Rectilinear

  Motion

• Transitional

  Motion

• Linear

  Motion

• Rotational

  Motion

1 N m = 10^x dyne x 10^y cm

Find x and y and what is the final value?

• x = 7 and y = 2

  Final value= 10^9

  dyne m

• x = 5 and y = 2

  Final value = 10^3

  dyne cm

• x = 5 and y = 2

  Final value = 10^7

  dyne m

• x = 5 and y = 2

  Final value = 10^7

  dyne cm

Draw a diagram of a spanner used to loosen a nut,

include the direction of force, the diagram is used to represent moment of force.

The moon revolving around the earth is in state of which type of equilibrium, and also justify why you think that in 50 words.

What is torque?

• A force that helps things turn

• A type of lever arm

• A point where the door turns

• A balanced force

What happens when you push a door far from the hinge?

• The door opens easily

• The door becomes harder to open

• The door does not move

• The door closes automatically

What is the lever arm?

• The distance from where you push to the point where the door turns

• The point where the door turns

• The force applied to open the door

• The twist that helps things turn

What is equilibrium in the context of forces?

• When forces are balanced and the object stays still

• When forces are unbalanced and the object moves

• When a door opens easily

• When a seesaw tips

What happens if you push on one side of a seesaw without any opposing force?

• The seesaw will tip

• The seesaw will stay balanced

• The seesaw will not move

• The seesaw will break